Projection apparatus for stereopticon



July 2, 1929. c, Fox Re. 17,350

, PROJECTION APPARATUS FOR STEREOP'VIICON V VIEWS AND CINEMATOGRAPHIC FILMS Original Filed May 17, 1926 2 Sheets-Sheet" 1 CECLL Fox INVENTOR.

ATTORNEYS.

July 2, 1929. c. M. FOX Re. 17,350

PROJECTION APPARATUS FOR STEREOPTICON VIEWS AND CINEMATOGRAPHIC FILMS Original Filed May 17, 1926 2 Sheets-Sheet 2 CECIL M 1 6x INVENTOR.

ATTORNEYS.

, I 45 ,zle fits over theffront end portion 2 of the Reissued July 2,1929.

- UNITED STATES j 01:01:. it. rox, or round, onmassmrron, BY nnsmi assrenmin'rs, 'ro mum-none Re. 17,350 PATENT OFFICE;

' ELECTRIC COMPANY; OF TOLEDO, OHIO, A CORPORATION 01 03 10.

rnomc'rmn arrana'rus ron. srnnnor'rrcon vmws AND ommroenarnic mars. 7

Original No. 1,620,956, dated March 15, 1927, Serial no. 109,467, filed lay 17, 182B.

reissue filed March 14, 1929. Serial 1T0. 347,147.

Thisinvention relates to projection apparatus, and more particularly to apparatus of the type which is adapted to project either cinematographic films or stereopticon views,

andthe principal object of my invention is to provide new and improved apparatus of this type. In the drawings accompanying this specification and forming a part of this application I have shown, for purposes of il,

' 1 metal and of general rectangular form. Thelustration, one form which my invention may assume, and in these, drawings:

Figure 1 is a side elevation of a projection apparatus embodying the invention w1th one side wall thereof broken away,

Figure 2 is a front rend elevation showing the muzzle in position for displaying stere opticon views; and

Figure 3 is a view similar to Figure 2 showing the muzzle arranged for displaying cinematographic films. a

The illustrated embodiment of the invention comprises a housing 1 formed of sheet front end ortion 2 of the housing 1 is substantially rusto-conical in shape, and extending rearwardly from'the housing 1 are a plurality of adjusting knobs 3 for adjusting the ositions of the mechanism contained-with- 1n the housing for providing an eflicientprojected 1i ht. I p The function of the various adjusting knobs 3will not be described inasmuch as these form no part ofthe present invention.

- The source of light generated within the housing 1 consists of an arclamp having opposed electrodes 4 and'b, the electrode being carried b an upright support 6, and the elec I trodes 5 eing carried by a support 7. The

supports 6 and 7 may be adjusted relatively to each other in any well known-manner so as to effect a light of the required brillianc'y. The are lam also includes a reflector 8 which is horizonta 1y slidable on parallel'rods 9 (onlyone rod being shown), a

In accordance with this invention a muzhousing'l. The muzzle 10" may be of rela- 'tively thin metal and formed by stamping.

To connect the muzzle 10 to the housing 1 a horizontal shaft 11 is rotatably mounted in Application for that the muzzlelO may be swung in a vertical plane .over the opening of the outer end port1on 2 of the casing 1.

To limit the downward movement of the muzzle 10 a lug 14 is formed thereon for engagement with an outwardly projecting pin 15 on the end portion 2. For limiting the upward swin movement of the muzzl and for hold e 10 catch 16 is adapted to engage the pin 15 as indlcated in Figure 3. A handle 17 maybe fixed to the muzzle for enabling the same to be readily moved. i

- The muzzle 10 is provided in one portion thereof with an openin over which fits an outwardly extendin tu ular member 18 secured to the muzzle y screws 19. When the muzzle is swung to its upper position, as

. shown, in Figure '3, the center of the tubular member 18 is substantiall. in line with the electrodes 4 and 5, and in t is position the apding the same in this position, a a

paratus may be used for displaying cinematogra h ic films. Indevices of, this character it is esirable to provide a shutter so that the source of light may be cut oil when desired, and for this purpose a shutter 20 is pivoted at 21 and is When the muzzle 10 'is swung downwardly provided with an operating handle with the stop14 in en a ement with the pin or displaying stereelectrodes 4 and 5, and the light from the are lamp is projected thruthe opening 24 in an indirect manner hereinafter described. a The member 23 is attached to the muzzle 10 by screws 25 disposedin-elon-gated slots 26 so that a'slight lateral adjustment of the member 23 may be made relatively to the muzzle 10. Movable across themember 23 is a slide 27 having a knob 28 at one end so that the slide may be moved to and fro across the opening 24 to display the views carried by the slide.

A reflector 29 is mountedat one sideof the j electrodes 4 and5, and when in operative position is adapted to direct the li ht from the arc lamp' thru the opening 24 in t e member 23 so that stereopticon views may be displayed.

Forthispurposeanopeningis to a screw 37 on the bracket 32. This spring serves normally to hold the reflector 29. in operative position so that the light from the arc lamp may be directed thruthe opening 241 in the member 23.

Depending from the reflector 29 is a pin 38 which is engaged at its inner side by a horizontal rod. 39 carried by a bracket 40 securedby set screws 41 to a shaft .42, and the opposite end of the shaft .42 is connected to a universal joint 43, and the universal joint 43 is connected to the shaft 11 by means of a rod 44 and a universal joint 45.

From the above description it will be seen that when the handle 17 of the muzzle 10 is swung downwardly to the position shown in Figure 2, so that stereopticon views may be displayed thru the rectangular opening 24., the reflector 29 is disposed in operative position relatively to the arc lamp. When it is desired to discontinue the displaying of stereopticon views the handle 17 of the muzzle 1O may be swung upwardly until the catch 16 enand 3) and this movement is transmitted thru' '55- matically moved intoand out ofpositiom-and flector ad acent said source of light, and

gages the pin 15, and in this position the tubular projection 18 is properly positioned relatively to the arc lamp so that the light generated is. satisfactory for displaying cinematographic films.- It will be observed that when the muzzleis swung upwardly the shaft 11 is rotated in a clockwise direction, (Figures 2 the universal joints 45 and 43, rod 44, shaft 42-,

and rod 39, to the depending pin38 of the re-" flector 29. By this movement the pin 38 is engaged and the reflector 29 is swung away from the arc lamp to inoperative position. When the handle 17 of the muzzle is again swung] downwardly the rod 39, through the connections described, is moved away from the pin v housing and. a source of llght withm said housing, a muzzle on the outer end of said 38, and the coil spring 31 therai'ter functions to move the reflector 29 to operative position so that the stereopticon views may be displayed. I

It will be seen that the reflector 29. is auto-.

chine in more or less detail to comply with the requirements of the statute, it is nevertheless described 1 'impr'oved' madesired that this detailed description be considered merely as illustrative, and not as limiting, as it is to be understood that changes and modifications may be made by those skilled in this art without departing from the spirt of the invention, or sacrificing the advantages thereof.

I claim: 1. In a projection apparatus having a housing and a source of light within said housing, a muzzle on said housing provided with a pair of openings, means for moving said muzzle in one direction or another, a suplemental reflector adjacent saidsource of ight, a connection between said muzzle and reflector, for actuating said reflector away from said source of light, and means for moving said reflector adjacent the source of light when said muzzle is moved to. apredetermined position thereby to direct light rays through one of said openings.

2. In aprojection apparatus having a housing and a source of'light within said housing a muzzle connected to said housing and provided with a pair of openings, means housing, an outwardly extending tubular projection on said muzzle through which cinematographic films may be displayed when the muzzle is in one position, a substantially rectangular projection on said muzzle adjacent said tubular projection through which stereoptic views may be displayed when said muzzleis moved to another POSl'? tion, a source of light within said housing, one projection being 'registrable with said source of light when the muzzle is in one posi- ;tion, and means actuated by movement of said muzzle for directing light through the other projection whenthe muzzle is moved to another position. l 4. In a projection apparatus-having a housing provided with a ,pair of openings,

said source of'light, a pivotally mounted re- 'tioned t'o reflect rays from said source through one, opening and when said muzzle is moved to the opposite position the reflector is moved away from the source to inoperative posltlon. i

openings, spring means for normally holding said reflector in operative position, and a'con' nection between said muzzle and said reflector for moving said reflector away from the source of light when said muzzle is moved to a predetermined position.

6. In a projection apparatus having a housing and a source of light within said housing, a muzzle connected to-the outer end of said housing, means for moving said muzzle to different positions, a reflector adjacent said source of light for directing light rays through one of said openings, means for moving said reflector to operative position, and means actuated by movement 0 said muzzle for moving said reflector to inoperative position.

.7. In a projection apparatus havinga hou sing and source of light within the housing,

a muzzle on one end of said housing having 3 a pair of openings, a-shaft rotatably mounted in said housing, and to which said muzzle is fixed, a pivotally mounted vertically disposed reflector adjacent said source of light, means for actuating said reflector to operative position to' direct light rays from said source of light through one of said openings,

and means connecting said shaft and reflector for swinging said reflector to inoperative position when the muzzle is moved to a predetermined position. a

8. In a projection apparatus havinga housing and a source of light within the housing, a muzzle pivoted to one end of said housing having openings for displaying stereopticon views and cinematographic films at difl'erent periods, a reflector adjacent said source of light for directing light rays through one of said openings to display stereo ticon views,

V means actuated by movemento said muzzle a for moving the'reflector to one position, and means for-moving the reflector to another position.

- 9. In a projection apparatushaving a housing and a source of lightwithin said housing, a muzzle for one end of said housing and provided with a pair of openings through which light rays may be projected, a shaft rotatably mounted in said housing and vto which said muzzle is pivotally confiected, a reflector adjacent said source oflight, means i for pivotally mounting said reflector, means includin universal" joints connecting said shaft an reflector whereby movement of said muzzle in i one direction moves said reflector away from said source of light, and'means for moving said reflector to operative position when said muzzle s swung in'the opposite direction. a a a 10. Projection apparatus comprising; a housing; movable light-beam-producing mechanism disposed within said housing -movable to vary a characteristic of the utilized light beam produced thereby; movable nose mechanism connected to said housing, provided with a pair of openings for the passage of light tlierethrough,"and movable between a position in which one ofsaid openings is in operative relation to said light beam and a position in which the other of said openings is in operative relation to said light beam; and means whereby such movement of one of said mechanisms will automaticall be accompanied by such movement of the other of said mechanisms.

11. Projection apparatus comprising: a housing; movable light-beam-producing mechanism disposed within said housing movable to vary the focus of the utilized light beam produced thereby; movable nose Inechanism connected to said housing, provided with a pairof openings for the passage of light therethrough, and movable between a position in which one of said openings is in operative relation'to said light beam and a position in which the other of said openings is in operative relation to said light beam; and means whereby such movement of one of said .mechanisms will automatically be accompaniediby such movement of'the other of said mechanisms. I

12. Projection apparatus comprising: a housing;- movable light-beam-producing mechanism disposed within said housing, 7 comprising light-producing means, compris ing also movable reflector means cooperating with said light-producin means to produce a light beam,- and variab e b movement of said reflector means to vary te focus of said light beam; movable nose mechanism connectedtosaid'housing, provided with a pair of openings for the passage of light therethrough, and movable between a position in which one of said openings is in operative relation to said light beam and a position in which the other of; said openings is in opera tive relation to said light beam; and means whereby such movement of one of said mech anisms will automatically be accompanied by such movement of the other of said mechanisms. a

13. Projection apparatus 7 comprising: a housing; movable light-beam-producing mechanism disposed within 'said housing movable to vary a characteristic of the utilized light beam produced thereby; movable nose mechanism connected to said housing, provided with a pair of openings for the passage oflight therethrough, and movable between a position in which one of said openings is in o rative relation to said light beam and a position in which the other of said openbeam; and means whereby such movement of position in which one of said openings is in' tween a position in which one of said openings is in operative relationto said light beam and a position in which the other of'said openings mechanism.

housing 14. Projection apparatus comprising: a 'movable light-beam-producing housing; mechanisms disposed within said housing movable to vary the focus of the utilized light beam produced thereby movable nose mechanism connected to said'housing, provided with a pair of openings for the passage of light therethrough, and movable between a operative relation to said light beam and a position in which the other of said openings is in operative relation to said light beam and means whereby such movement of one of said mechanisms automatically efi'ects'such movement of the other of said mechanisms.

15. Projection apparatus comprising: a housing; movable comprising light-producing means, comprising also movable reflector means cooperating with said light-producing means to produce a lightbeam, and variable bypmovement of said reflector means to vary the focus of said light beam; movable nose mechanism connected to said housing, provided with a pair of openings for the passage of light therethrough,

and movable between a position in which one of said openings'is in operative relation to said light beam and a position in which the other of said openings is in operative relation to said light beams; and means whereby such movement of one of said mechanisms automatically eifects such movement of the other of said mechanisms. Y

16; Projection apparatus comprising: a movable light-beam-producing mechanism disposed within said housing movable to vary a characteristic oi? the utilized light beam produced thereby; movable nose mechanism connected to said housing, provided with a pair of openings for the passage of light therethrough, and movable beis in operative relation to said light beam; and means whereby such movement of said nose mechanism automatically efl'ects such movement ofsaidlight-beam-producing j17. Projection-apparatus comprising: a

housing; movable light beam producing mechanism disposed withinsaidhousingmovable to vary the focus of the utilized light beam produced thereby; movable nose mechanism connected to said housing, provided with a pair of openings .for the assage of light therethrough, and movable etween a position in which one of said openings is in operative relation to said light beam and a position in which'the other of said openings is other of said mecha-r in operative relation to said light beam; and means whereby such movement of said nose .mechanism automatically effects such movement of said light-be am-producing mechav nism.

' 18. Projection apparatus comprising: a housing; movable light beam producing mechanism disposed within said housing,-

comprising light-producing means, comprising also movable reflector means cooperating with said light-producing means to produce a light beam, and variable by movement of said reflector means to vary the focus of said light beam; movable nose mech-' anism connected to said housing, provided with a pair of openings for the passage of light therethrough, and movable between aposition in which one of said openings is in position in which the other of said openings is'in operative relation to said light beam;

and means whereby such movement of said operative relation to said light beam and a light-beam-producing mechanism disposed within said housing,

tween a'position'in which one of said openings is inoperative relation to said light beam and a position in which the other of said openings is in operative relation to said light beam; and means whereby such movement of one of said mechanisms in each direction will automatically be accompanied by such movementof the other of said mechanisms in the corresponding direction.

20. Projection apparatus comprising: a

housing; movable light-beam-producing mechanism disposed within said housing movable to vary a characteristic of the utilized light beam produced thereby; movable nose mechanism connected to said housing,

provided with a pair of openings for the passage of light therethrough, and movable be tween a position in which one-of said openings is in operative relation to said light beam and a position in whichthe other of said openings is in operative relation to said light beam; and means whereby such movement of one of said mechanisms in'each direction automatically' effects such movement of the other of said mechanisms in the corresponding direction.

-, :21. Projection apparatuscomprising a" movable light 1 beam producing housing mechanism disposed within said housing movable to vary acharacteristic of the utilized lightvbeam produced thereby; movable nose mechanism connected .to said housing,

' provided with a pair of openings for the pas sage of light therethrough, and movable between a ,osition in which one of said openings is in operative relation to said light beam and a position in which. the other of said openings is in operative relation to said light beam; and means whereby such movement of said nose mechanism in each direction automatically effects such movement of said light-beam-producing mechanism in the corresponding direction.

22. Projection apparatus comprising: a housing; movable light-beam-producing mechanism disposed within said housing movable to vary a characteristic of the utilized light beam produced thereby; movable nose mechanism connected to said housing,

.providedwith a pair of openingsfor the passage of'light therethrough, and movable-between a position inwhich one of said openings is in operative relation to said light beam and a position in which the other of said openings is in operative relation to said.

light beam; and means whereby such move- "ment of one of said mechanisms' in each lirection will automatically be accompan ed by such movementof the other of said mechanisms in the same direction, in one direction by positive actuation of said other of said mechanisms, and in the other direction by permitting actuation of said other of said mechanisms by a biasing means acting there- 23. Projection apparatus. comprising; a housing; movable light-beam-producing mechanism disposed within said housing movable to vary a characteristic of'the utilized light beam produced thereby; movable nose mechanism connected to said housing,-

' said other of said mechanismsyby a biasing .mechanism disposed within said housing means acting thereon.

24. Projection apparatus comprising:

housing; movable light-beam-producing v movable to vary a characteristic of'the utilizedlight beam produced thereby; movable nose mechanism connected to said housing,

provided with a pair of openings for the passage of light therethrough,and movable between a position in which one of said openings isin operative relation to said light beam and a position in which the otherof said other direction b housing;

openings is in operative relation to said light beam; and means wherebysuch movement of" said nose mechanism in each direction automatically effects such movement of said light beam-producin mechanism in the samevdirection, in one irection b positive actuation of said other of said mecanisms, and in the permitting actuation of said other of sai means acting thereon.

25. Projection apparatus comprisingra li'ght-beam-producing housing; movable mechanism disposed within said housing movable to vary the utilized light beam produced thereby between a beam suitable-for cinematographic projection and a beam suit able for stereopticon projection; movable nose m'echanism connected to'said housing,-

provided with a first opening for the passage of light therethrough for cinematographic projection and with a second opening for the con projection, and movable between a posimechanisms by a biasing passage of light therethrough for stereopti- 1 tion inwhich one of said openings is in op- Q erative relation "to said light beam and a po-- sition in which the other of said openings is in operative relation to said light beam; and

means whereby such movement of one of said mechanisms will automaticallybe accompanied by such movement of the other of said mechanisms.

26. Projection apparatus comprising; a housing; movable light-beam-producing mechanism disposed within said housing movable to var the focus of the light beam produced there y between a beam suitable for cinematographic projection and a beam suitable for stereopticon projection; movable nose mechanism connected to said housing, provided with a first opening for the passage of light therethrough for cinematographic projection and with a second opening for'the passage of light therethrough for stereoptiv I con projection, and movable between a position in which one of said openings is in operative relation to said light beam and a position in which the other of said openings is in operative relation-to said light beam; and

means whereby such movement of one of said mechanisms will automatically be accompanied by such movement of the other of said mechanisms.

27 Projection apparatus comprising: a movable light-beam-producing mechanism disposed within said housing,

ing also movable reflector means cooperating with said light-producing means to produce a light beam, and variable by movement'of said reflector means to vary the focus of said light beam between a beam suitable for cine- -cOn'iprising light-producing means, comprismatographic projection and a beam suitable V for stereopticon pro ection; movable nose mechanism connected to said housing, pro vided with a first opening for the passage of light therethrou h foi-Leinemat ographicpro-- jection and wit agjsecond opening for the passage of light therethrough for stereopticon projection, and movable between a pos1- 5 tion in which one of said openings is in op- :erative relation to 'saidi light beam and a povsi'tion in whiclii'the other of said openings is in operative relation to-said light beam; and means whereby-such movement of one of said mechanismswill automatically be accompanied by such movemcntof the other of said -mechanisms.'--

28. Projection apparatus "comprising: a

housing;- and light-beam-producing mechanism disposed within said housing and includinglight-producingmeans and reflector means cooperating with 'said light producing means',lsaid reflector-means having at least a part thereof; movable, and said light-beamprod'ucingmea'ns .bin' variable by movement 5 a said partirom con 'tion to produce a light beam suitable for cinematogra hic prt'ijection to a condition to produce a lig t beam of different focus and suitable for stereopticon least a part of said reflector means being relatively movable, and said light beam-producing means being variable by such relative movement from a condition to produce alight beam suitable for cinematogra hic projection to a condition to produce a lig t beam of different focus and suitable for stereopticon projection.

In testimony whereof I hereunto affix my signature.

C. M. FOX. 

